Copper Head S21G FFL909A 4000k Mule 😎

Host: S21G Black Aluminium + Copper Head.

Emitter: FFL909A.

CCT: 4000k.

Driver: Convoy 3v 20A Buck Driver.

MCPCB: Convoy 20mm 9090 DTP.

Heat Sink: Handmade Copper.

Mule Gasket: 3D Printed Resin.

Additions: 20awg Tail Spring Bypass.

2 of 2 FFL909A builds done this weekend. More 909A builds to come in some other hosts 👀!

Interesting that this specific driver & specific emitter combo is giving a ridiculously low 0.1% mode! You cannot see that it is illuminated in man made or day light, it has to be in a dim or dark area to clock it! I initially thought it wasn't working at all, but all other modes were working perfectly! Realised when I moved through the house into a dark area that it was illuminated, but much lower than the usual 0.1% I'm used to getting. I know why it's happening, it just hasn't happened to me until now, so it caught me off guard 😶‍🌫️!

From what I can tell, there is no fault with the driver itself, all other modes work perfectly and the 'light' is stable at 0.1% with no flicker etc. If anyone knows otherwise, then please let me know.

Personally, I do not use 0.1%, I'm a group mode 10 kinda guy, fortunately the new owner is the same 😉 And as mentioned, all other modes work exactly as they should… But this light would be a good one for those super low 'moonlight' chasers! It obviously dims further when the 909A is warm & you come back to 0.1%… like you can only see it in a dark room after your eyes have adjusted to the darkness kind of dimmer!

Anyway, on with the rest of the post… to get photos of the 'firefly' mode, I had to darken the room, which isn't great for photos, but worked & allowed me to get the pics I needed.

The 4000k rosy 909A does its thing & gives some beautiful light out the business end 😍!

That copper head & copper heat sink help with the heat, but not for very long, she's still a hot rod 😎 I am however a massive fan of the look of this one! Black & Copper = Winner 🏆